
Pamet do NTB
Potreboval bych radu, kupuju na bazaru ramku do notase, jde mi o to ze ted mam v ntb nejakeho Apacera 512mb PC2-4300 CL4, na inzeratu jsem si nasel 2x1GB ale je to PC2-5300. Tudiz je rychlejsi, oboje jsou DDR2, jde mi spise o to jestli to ten ntb pobere. V manualu pisou jen ze to ma byt pamet DDR2 SOdimm nic vic, podle me by ta pamet mela jet na nizsich taktech ne?
Pridavam manualu od ntb.
Tak jsem si uz odpovedel jaka je kompatibilita rychlejsich DDR2 vuci pomalejsim.
DDR2 DIMMs are not designed to be backward compatible with DDR DIMMs. The notch on DDR2 DIMMs is in a different position from DDR DIMMs, and the pin density is higher than DDR DIMMs in desktops. DDR2 is a 240-pin module, DDR is a 184-pin module. Notebooks have 200-pin modules for DDR and DDR2, however the notch on DDR modules is in a slightly different position than that on DDR2 modules.
Higher performance DDR2 DIMMs are compatible with lower performance DDR2 DIMMs; however, the higher performance module runs at the lower module's frequency. Using lower performing DDR2 memory in a system capable of higher performance results in the bus running at the rate of the lowest performance memory in use; however, in many systems this performance hit can be mitigated by setting the timings of the memory to a lower latency setting.
Zdá se mi, že si to trochu pleteš - našel sis článek o kompatibilitě DDR vs. DDR2 - tam opravdu zpětná kompatibilita neexistuje.
Ale když koupíš rychlejší DDR2 (myšleno MHz) a dáš je do notebooku, který podporuje jen pomalejší DDR2, tak by RAMky měly fungovat, jen poběží na nižší frekvenci.
Jde o tento radek
Higher performance DDR2 DIMMs are compatible with lower performance DDR2 DIMMs;
No snad to pujde, pameti jsou na ceste, jinak me manzelka zabije
Mělo by to jet, normálně do ntb s 533/667 ramkama cpu 800mhz.